Signaling for inter-base station interference estimation

Abstract

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive a message indicating one or more communication patterns from a base station. The one or more communication patterns may indicate to the UE to adjust one or more parameters for transmitting an uplink communication during a set of time resources, a set of beams, a set of ports, or any combination thereof. During the resources indicated in the one or more communication patterns, the base station may estimate a cross-link interference channel between the base station and a second base station. The one or more communication patterns may indicate a hopping pattern for each subband of a bandwidth part. The base station may configure the UE with a timing advance based on the message.

What is claimed is: 
     
       1. An apparatus for wireless communication at a user equipment (UE), comprising:
 a memory; and 
 a processor coupled to the memory and configured to cause the apparatus to:
 receive, from a first base station, a message that indicates one or more communication patterns of one or more resources for estimating a cross-link interference channel between uplink communications associated with the first base station and downlink communications associated with a second base station; 
 adjust a transmission parameter for an uplink communication based at least in part on receiving the message from the first base station; and 
 transmit the uplink communication over the one or more resources based at least in part on adjusting the transmission parameter. 
 
 
     
     
       2. The apparatus of  claim 1 , wherein the processor is further configured to cause the apparatus to:
 receive, from the first base station, a second message to activate a communication pattern of the one or more communication patterns, wherein adjusting the transmission parameter for the uplink communication is based at least in part on receiving the second message. 
 
     
     
       3. The apparatus of  claim 2 , wherein:
 the message comprises a radio resource control message; and 
 the second message comprises a medium access control-control element or downlink control information. 
 
     
     
       4. The apparatus of  claim 1 , wherein the processor configured to adjust the transmission parameter for the uplink communication is further configured to cause the apparatus to:
 reduce a transmit power of the uplink communications during at least a portion of the one or more resources. 
 
     
     
       5. The apparatus of  claim 4 , wherein the processor configured to reduce the transmit power of the uplink communications is further configured to cause the apparatus to:
 reduce the transmit power of the uplink communications to zero during the portion of the one or more resources. 
 
     
     
       6. The apparatus of  claim 1 , wherein the processor is further configured to cause the apparatus to:
 identify a first subband of a bandwidth part for estimating the cross-link interference channel, a second subband of the bandwidth part for a second uplink communication by the UE, and a third subband of the bandwidth part as a guard band between the first subband and the second subband based at least in part on receiving the message, the one or more resources comprising the bandwidth part, wherein the one or more communication patterns included in the message indicate the first subband, the second subband, and the third subband, wherein adjusting the transmission parameter for the uplink communication is based at least in part on the identifying. 
 
     
     
       7. The apparatus of  claim 6 , wherein the processor is further configured to cause the apparatus to:
 transmit, over the second subband, the uplink communication to the first base station based at least in part on receiving the message. 
 
     
     
       8. The apparatus of  claim 1 , wherein the processor is further configured to cause the apparatus to:
 identify a hopping pattern of subbands of a bandwidth part for estimating the cross-link interference channel and transmitting the uplink communications based at least in part on receiving the message, the hopping pattern spanning a plurality of slots, wherein the one or more communication patterns indicate the hopping pattern, wherein adjusting the transmission parameter for the uplink communication is based at least in part on the identifying. 
 
     
     
       9. The apparatus of  claim 8 , wherein the hopping pattern indicates at least one time resource for each subband of the subbands of the bandwidth part for estimating the cross-link interference channel. 
     
     
       10. The apparatus of  claim 1 , wherein the processor configured to adjust the transmission parameter for the uplink communication is further configured to cause the apparatus to:
 apply a timing advance for the uplink communication transmitted by the UE during a first time resource of the one or more resources based at least in part on receiving the message, the timing advance based at least in part on a propagation delay of a downlink communication transmitted by the second base station. 
 
     
     
       11. The apparatus of  claim 1 , wherein the processor configured to adjust the transmission parameter for the uplink communication is further configured to cause the apparatus to:
 identify one or more beams to restrict the UE from using to transmit the uplink communication during the one or more resources, wherein the message indicates the one or more beams. 
 
     
     
       12. The apparatus of  claim 11 , wherein the processor is further configured to cause the apparatus to:
 receive, from the first base station, a second message that schedules the UE with the uplink communication using the one or more beams; and 
 determine to skip the uplink communication or use a different beam than the one or more beams based at least in part on the one or more communication patterns. 
 
     
     
       13. The apparatus of  claim 1 , wherein the processor is further configured to cause the apparatus to:
 identify one or more subbands of frequency resources or one or more slots of time resources or both for estimating the cross-link interference channel, wherein the message includes an indication of the one or more subbands or the one or more slots. 
 
     
     
       14. The apparatus of  claim 1 , wherein:
 the one or more resources comprise one or more subbands of frequency resources and one or more slots of time resources; and 
 the one or more communication patterns indicate to the UE to mute or reduce a transmit power of one or more uplink communications during a set of time resources of the one or more resources. 
 
     
     
       15. The apparatus of  claim 1 , wherein the one or more communication patterns indicate one or more ports for estimating the cross-link interference channel. 
     
     
       16. The apparatus of  claim 1 , wherein:
 the first base station is configured to receive the uplink communications over the one or more resources; and 
 the second base station is configured to transmit the downlink communications over the one or more resources. 
 
     
     
       17. An apparatus for wireless communication at a first base station, comprising:
 a memory; and 
 a processor coupled to the memory and configured to cause the apparatus to:
 transmit, to a user equipment (UE), a message that indicates one or more communication patterns of one or more resources for estimating a cross-link interference channel between the first base station and a second base station, the first base station configured to receive uplink communications over the one or more resources; 
 monitor the one or more resources for cross-link interference associated with the second base station based at least in part on transmitting the message; and 
 process an uplink communication from the UE communicated over a resource full duplexed with one or more downlink communications associated with the second base station based at least in part on monitoring the one or more resources for the cross-link interference. 
 
 
     
     
       18. The apparatus of  claim 17 , wherein the processor is further configured to cause the apparatus to:
 transmit a second message to activate a communication pattern of the one or more communication patterns, wherein monitoring the one or more resources for the cross-link interference is based at least in part on transmitting the second message, wherein the message comprises a radio resource control message and the second message comprises a medium access control-control element or downlink control information. 
 
     
     
       19. The apparatus of  claim 17 , wherein the processor is further configured to cause the apparatus to:
 identify one or more UEs to mute the uplink communications during at least a portion of the one or more resources, the one or more UEs comprising the UE, wherein transmitting the message is based at least in part on identifying the one or more UEs. 
 
     
     
       20. The apparatus of  claim 17 , wherein the processor is further configured to cause the apparatus to:
 identify one or more subbands of frequency resources or one or more slots of time resources or both for estimating the cross-link interference channel, wherein the message includes an indication of the one or more subbands or the one or more slots. 
 
     
     
       21. The apparatus of  claim 17 , wherein the processor is further configured to cause the apparatus to:
 identify a first subband of a bandwidth part for estimating the cross-link interference channel, a second subband of the bandwidth part for the uplink communication by the UE, and a third subband of the bandwidth part as a guard band between the first subband and the second subband, the one or more resources comprising the bandwidth part, wherein the one or more communication patterns included in the message indicate the first subband, the second subband, and the third subband. 
 
     
     
       22. The apparatus of  claim 21 , wherein the processor configured to monitor the one or more resources further comprises the processor configured to cause the apparatus to monitor the first subband of the bandwidth part for the cross-link interference. 
     
     
       23. The apparatus of  claim 21 , wherein the processor is further configured to cause the apparatus to:
 receive, over the second subband, the uplink communication from the UE based at least in part on transmitting the message. 
 
     
     
       24. The apparatus of  claim 17 , wherein the processor is further configured to cause the apparatus to:
 identify a hopping pattern of subbands of a bandwidth part for estimating the cross-link interference channel and receiving the uplink communications, the hopping pattern spanning a plurality of slots, wherein the one or more communication patterns indicate the hopping pattern, wherein the hopping pattern indicates at least one time resource for each subband of the subbands of the bandwidth part for estimating the cross-link interference channel. 
 
     
     
       25. The apparatus of  claim 17 , wherein the processor is further configured to cause the apparatus to:
 identify a timing advance for the uplink communication communicated by the UE during the one or more resources, the timing advance based at least in part on a propagation delay of a downlink communication transmitted by the second base station; and 
 transmit, to the UE, a second message that comprises the timing advance, wherein the monitoring is based at least in part on transmitting the second message, wherein the timing advance is based at least in part on a capability of the UE. 
 
     
     
       26. The apparatus of  claim 17 , wherein the processor is further configured to cause the apparatus to:
 identify one or more beams to restrict the UE from using to transmit the uplink communications during the one or more resources, wherein the message indicates the one or more beams. 
 
     
     
       27. An apparatus for wireless communication at a first base station, comprising:
 a memory; and 
 a processor coupled to the memory and configured to cause the apparatus to:
 transmit a message indicating a first resource comprising a first type of resource or a second resource comprising a second type of resource to use for estimating a cross-link interference channel between the first base station and a second base station, wherein the first base station is configured to receive uplink communications or transmit downlink communications to a user equipment (UE) over the first type of resource and the first base station is configured to transmit the downlink communications to the UE over the second type of resource; 
 monitor one or more resources for cross-link interference associated with the second base station based at least in part on transmitting the message; and 
 process an uplink communication from the UE over a full-duplex resource based at least in part on monitoring the one or more resources for the cross-link interference. 
 
 
     
     
       28. The apparatus of  claim 27 , wherein the processor is further configured to cause the apparatus to:
 transmit, to the UE, a second message to convert the first type of resource to the second type of resource, wherein monitoring the one or more resources for the cross-link interference is based at least in part on transmitting the message, wherein the second message comprises a slot format indicator configured to convert the first resource comprising the first type of resource to be the second type of resource. 
 
     
     
       29. The apparatus of  claim 27 , wherein:
 the first type of resource comprises a flexible symbol configured to use with the uplink communications or the downlink communications; and 
 the second type of resource comprises a downlink symbol. 
 
     
     
       30. A method for wireless communication at a user equipment (UE), comprising:
 receiving, from a first base station, a message that indicates one or more communication patterns of one or more resources for estimating a cross-link interference channel between uplink communications associated with the first base station and downlink communications associated with a second base station; 
 adjusting a transmission parameter for an uplink communication based at least in part on receiving the message from the first base station; and 
 transmitting the uplink communication over the one or more resources based at least in part on adjusting the transmission parameter.